Calculating Thermal Energy Changes in Phase Changes

Calculating Thermal Energy Changes in Phase Changes

Assessment

Interactive Video

Science

6th - 10th Grade

Hard

NGSS
MS-PS1-4, MS-PS3-3, MS-PS3-4

Standards-aligned

Created by

Amelia Wright

FREE Resource

Standards-aligned

NGSS.MS-PS1-4
,
NGSS.MS-PS3-3
,
NGSS.MS-PS3-4
Mr. Melis explains thermal energy changes during phase transitions in a three-part series. In this video, he focuses on calculating energy changes for single phase transitions, using two examples: water vapor condensing to water and ice melting to water. Each example involves multiple steps, including calculating energy release or absorption using specific heat capacity and heat of vaporization or fusion. The video concludes with a summary and a prompt to subscribe.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial temperature of the water vapor in the first example problem?

100 degrees Celsius

105 degrees Celsius

15 degrees Celsius

35 degrees Celsius

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the condensation point of water?

100 degrees Celsius

150 degrees Celsius

0 degrees Celsius

50 degrees Celsius

Tags

NGSS.MS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula is used to calculate the thermal energy released by water vapor as it cools from 105 to 100 degrees Celsius?

Q = mcΔT

Q = cmΔT

Q = mL

Q = mΔH

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the specific heat capacity of water vapor used in the calculations?

1.0 J/g°C

2.0 J/g°C

3.0 J/g°C

4.18 J/g°C

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How much energy in kilojoules is released when 35 grams of water vapor condenses into water?

-91.9 kJ

-12.4 kJ

-35.0 kJ

-79.1 kJ

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final temperature of the water in the first example problem?

25 degrees Celsius

0 degrees Celsius

15 degrees Celsius

100 degrees Celsius

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the second example, what is the initial temperature of the ice?

12 degrees Celsius

25 degrees Celsius

0 degrees Celsius

-12 degrees Celsius

Tags

NGSS.MS-PS1-4

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